rs72549310
Variant summary
Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong
The NM_000110.4(DPYD):c.61C>T(p.Arg21Ter) variant causes a stop gained change. The variant allele was found at a frequency of 0.00000931 in 1,611,414 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000096 ( 0 hom. )
Consequence
DPYD
NM_000110.4 stop_gained
NM_000110.4 stop_gained
Scores
4
2
1
Clinical Significance
Conservation
PhyloP100: 3.59
Genes affected
DPYD (HGNC:3012): (dihydropyrimidine dehydrogenase) The protein encoded by this gene is a pyrimidine catabolic enzyme and the initial and rate-limiting factor in the pathway of uracil and thymidine catabolism. Mutations in this gene result in dihydropyrimidine dehydrogenase deficiency, an error in pyrimidine metabolism associated with thymine-uraciluria and an increased risk of toxicity in cancer patients receiving 5-fluorouracil chemotherapy. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2009]
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ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 18 ACMG points.
PVS1
?
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 70 pathogenic variants in the truncated region.
PM2
?
Very rare variant in population databases, with high coverage;
PP5
?
Variant 1-97883353-G-A is Pathogenic according to our data. Variant chr1-97883353-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 188848.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
DPYD | NM_000110.4 | c.61C>T | p.Arg21Ter | stop_gained | 2/23 | ENST00000370192.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
DPYD | ENST00000370192.8 | c.61C>T | p.Arg21Ter | stop_gained | 2/23 | 1 | NM_000110.4 | P1 | |
DPYD | ENST00000306031.5 | c.61C>T | p.Arg21Ter | stop_gained | 2/6 | 1 | |||
DPYD | ENST00000460019.1 | n.136C>T | non_coding_transcript_exon_variant | 2/3 | 2 | ||||
DPYD | ENST00000646851.1 | n.710C>T | non_coding_transcript_exon_variant | 6/6 |
Frequencies
GnomAD3 genomes ? AF: 0.00000658 AC: 1AN: 152004Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000120 AC: 3AN: 250890Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135594
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GnomAD4 exome AF: 0.00000959 AC: 14AN: 1459292Hom.: 0 Cov.: 31 AF XY: 0.0000138 AC XY: 10AN XY: 726088
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ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Dihydropyrimidine dehydrogenase deficiency Pathogenic:5
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 07, 2023 | - - |
Likely pathogenic, criteria provided, single submitter | literature only | Counsyl | Jun 23, 2014 | - - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Apr 11, 2023 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Victorian Clinical Genetics Services, Murdoch Childrens Research Institute | Feb 02, 2022 | Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as a Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with dihydropyrimidine dehydrogenase deficiency and 5-fluorouracil toxicity (MIM#274270). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0115 - Variants in this gene are known to have variable expressivity (PMID: 11783493). (I) 0201 - Variant is predicted to cause nonsense-mediated decay (NMD) and loss of protein (premature termination codon is located at least 54 nucleotides upstream of the final exon-exon junction). (SP) 0252 - This variant is homozygous. (I) 0304 - Variant is present in gnomAD (v2) <0.01 for a recessive condition (3 heterozygotes, 0 homozygotes). (SP) 0701 - Other NMD-predicted variants comparable to the one identified in this case have very strong previous evidence for pathogenicity (ClinVar). (SP) 0803 - This variant has limited previous evidence of pathogenicity in unrelated individuals. It has been previously reported in patients with dihydropyrimidine dehydrogenase deficiency and 5-fluorouracil toxicity (ClinVar, PMID: 12562666). (SP) 0905 - No published segregation evidence has been identified for this variant. (I) 1002 - This variant has moderate functional evidence supporting abnormal protein function. Functional analysis shows that this variant resulted in an absence of detectable dihydropyrimidine dehydrogenase activity (PMID: 24648345). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Jan 16, 2022 | - - |
not provided Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | GeneDx | Sep 15, 2023 | Reported with a second DPYD variant in a patient with severe 5-fluorouracil toxicity (van Kuilenburg et al., 2003); Published functional studies demonstrate a damaging effect on DPD enzyme activity, reducing it to less than 12.5% activity relative to wild type DPD (Offer et al., 2014); Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; This variant is associated with the following publications: (PMID: 25525159, 25381393, 25502898, 24648345, 17121937, 33305610, 26621101, 21833589, 32707991, 34621706, 19287123, 23199091, 35314707, 12562666) - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
A;A;D
Vest4
GERP RS
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at